6 papers
Interaction-mediated Co-existence of Altermagnetism and Topology
Jasmin Bedow, Nitin Kaushal, Marcel Franz
We study an extended Hubbard model on Lieb lattice at electron filling 2 and 4, and demonstrate that the interactions lead to the simultaneous emergence of altermagnetic order and…
Spontaneous altermagnetism in multi-orbital correlated electron systems
Nitin Kaushal, Adarsh S. Patri, Marcel Franz
Altermagnets have attracted considerable attention in recent years owing to their potential technological applications in spintronics and magnonics. Recently, a new class of sponta…
Beyond-classical computation in quantum simulation
Andrew D. King, Alberto Nocera, Marek M. Rams +60
Quantum computers hold the promise of solving certain problems that lie beyond the reach of conventional computers. However, establishing this capability, especially for impactful…
Correlated insulating states in slow Dirac fermions on a honeycomb moir{é} superlattice
Dongyang Yang, Jing Liang, Haodong Hu +8
Strong Coulomb repulsion is predicted to open a many-body charge gap at the Dirac point of graphene, transforming the semimetal into a Mott insulator. However, this correlated insu…
Comment on: "Dynamics of disordered quantum systems with two- and three-dimensional tensor networks" arXiv:2503.05693
Andrew D. King, Alberto Nocera, Marek M. Rams +8
In a recent preprint [1] (arXiv:2503.05693), Tindall et al. presented impressive classical simulations of quantum dynamics using tensor networks. Their methods represent a signific…
Altermagnetism in modified Lieb lattice Hubbard model
Nitin Kaushal, Marcel Franz
We study the emergence of altermagnetism from repulsive interactions for electrons on the Lieb lattice as a model of quasi-2D oxychalcogenides with the so-called "anti-CuO" l…